CN208137953U - A kind of quick slurry stop of double-shielded TBM - Google Patents
A kind of quick slurry stop of double-shielded TBM Download PDFInfo
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- CN208137953U CN208137953U CN201820357447.8U CN201820357447U CN208137953U CN 208137953 U CN208137953 U CN 208137953U CN 201820357447 U CN201820357447 U CN 201820357447U CN 208137953 U CN208137953 U CN 208137953U
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Abstract
The utility model discloses a kind of quick slurry stop of double-shielded TBM, the quick slurry stop of double-shielded TBM, including lining segment and grout stop, the lining segment is for trimmed tunnel country rock to form loop tunnel pipe.The grout stop is arranged around the outer wall of the tunneltron, the grout stop is made of the flexible pipe of end seals, the segment dislocation filled cavity of the flexible pipe, backfilling material, which is filled with the flexible pipe filled cavity, makes the flexible tube swelling, the outer peripheral surface of the grout stop after expansion squeezes the inner wall of the tunnel surrounding, wherein, the flexible pipe has the connector for being filled with the backfilling material.According to the quick slurry stop of the double-shielded TBM of the utility model embodiment, it ensure that the timely Fast Filling of lining segment Yu tunnel surrounding cavity, accelerate project progress, reduce the initial deformation of tunnel surrounding.
Description
Technical field
The utility model belongs to tunnel surrounding supporting field more particularly to a kind of quick slurry stop of double-shielded TBM.
Background technique
Double-shielded TBM is with geological adaptability is strong, driving speed is fast, highly-safe, labor intensity is low and handles rock burst energy
The advantages that power is strong is widely used in the engineering fields such as highway and railway tunnel and hydraulic tunnel.After TBM driving, backfill pipe
Piece and country rock cavity are the most important things of surrounding rock supporting.Traditional earth-filling method is using filling beans stone and cement injection mortar
The method combined.Since section of jurisdiction outer diameter differs larger with country rock internal diameter, maximum spacing reaches 15cm, and cavity inside is without any
Segmentation measure causes beans stone backfill filling rate low, and of poor quality, in the cement mortar of perfusion, cement mortar can be along beans stone
Between hole flow to the backing of TBM, cause being largely lost for cement mortar, while the mortar being lost can consolidate backing bottom
In tunnel surrounding, increase the resistance of development machine elapsed forward, in work progress, in order to avoid the loss of cement mortar causes
Usually the stream that the distance away from backing is much larger than cement mortar is arranged in cement mortar slip casting point by the bonding of TBM backing and country rock
The position of dynamic distance, since driving side is free face, grouting pressure liter is not high, cementing made of causing beans stone to condense with mortar
The porosity of body structure is big, of poor quality.
In recent years, it proposes for be segmented by 12-20m mounted section of jurisdiction periphery in tunneling boring construction method, in segmentation
Section of jurisdiction periphery is arranged circumferentially rubber hose, and the gas of 2Pa, then hydraulic reclamation beans stone and grout injection are filled with to rubber hose.?
In the method for this subsection filling, since the section of jurisdiction periphery of segmentation needs annular that whole rubber hose, the installation of rubber hose is arranged
Difficulty is big, while when rubber hose encounters country rock corner angle, rubber hose is easily destroyed, rubber hose and country rock and section of jurisdiction
Friction is small, and grouting pressure is not able to satisfy the requirement of high grouting pressure, the backfill solidity ratio of beans stone and cement slurry compared with
It is low.Based on the above situation, there is an urgent need to propose the quick slurry stop of double-shielded TBM, guarantee section of jurisdiction is timely close with country rock cavity
Envelope realizes the quickly stuffing of section of jurisdiction and country rock cavity, reduces country rock initial deformation.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
The quick slurry stop of a kind of double-shielded TBM out, the quick slurry stop of double-shielded TBM can be realized section of jurisdiction and tunnel surrounding point
Section sealing forms filling space, the loss of the filling space for preventing section of jurisdiction and country rock from being formed backfilling material in backfill.
According to the quick slurry stop of the double-shielded TBM of the utility model embodiment, including：Lining segment, the lining tube
Piece is for trimmed tunnel country rock to form loop tunnel pipe；Grout stop, the grout stop are arranged around the outer wall of the tunneltron,
Flexible pipe of the grout stop by end seals, the segment dislocation filled cavity of the flexible pipe, backfilling material are filled with the flexibility
Pipe filled cavity makes the flexible tube swelling, and the outer peripheral surface of the grout stop after expansion squeezes the inner wall of the tunnel surrounding,
In, the flexible pipe has the connector for being filled with the backfilling material.
According to the quick slurry stop of the double-shielded TBM of the utility model embodiment, since grout stop is set to lining tube in advance
Piece, when lining segment is completed simultaneously lining cutting when tunnel surrounding, into the filled cavity of grout stop, filling backfilling material to stop
Slurry ring expands, and the grout stop after expansion is extruded in the inner wall of tunnel surrounding, to prevent lining segment and tunnel surrounding cavity
When filling section of jurisdiction backfilling material, section of jurisdiction backfilling material flow direction driving end accelerates project progress, reduces the initial stage of tunnel surrounding
Deformation.
In some embodiments, the lining segment is equipped with the injected hole that extends radially through, and the connector is from the note
Hole is starched to stretch out.
In some embodiments, the outer wall of the lining segment is equipped with the section of jurisdiction groove of annular, the grout stop bonding
In the section of jurisdiction groove.
In some embodiments, the bottom surface of the section of jurisdiction groove is cambered surface.
In some embodiments, the radial dimension of the grout stop after expansion is slightly larger than the tunneltron and the tunnel
Gap between country rock.
In some embodiments, the grout stop includes a plurality of flexible pipe, the segment dislocation of every flexible pipe
For sub- filled cavity, multiple sub- filled cavities are not connected to mutually, and a plurality of flexible pipe is overlapped along tunnel outer wall circumferential direction to be formed
State grout stop.
In some embodiments, every flexible pipe both ends are that end is sealed by way of sealing or sewing.
In some embodiments, after filling the backfilling material into the sub- filled cavity, the flexibility tube swelling and phase
The sealing end of two adjacent flexible pipes squeezes overlap joint at the lining segment circumferential direction connector.
In some embodiments, the film strips are arranged in a one-to-one correspondence with the lining segment, the circumferential direction of every film strips
Length is greater than the circumferential lengths of the corresponding lining segment.
In some embodiments, the backfilling material is any one of empty gas and water, cement mortar and cement paste.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and is readily appreciated that, wherein：
Fig. 1 is a kind of overall structure figure of the quick slurry stop of double-shielded TBM of the utility model embodiment；
Fig. 2 is that section of jurisdiction shows with film strips matching relationship in a kind of quick slurry stop of double-shielded TBM of the utility model embodiment
It is intended to.
Fig. 3 is that a kind of quick slurry stop of double-shielded TBM of the utility model embodiment structure in the backfilling process of section of jurisdiction is shown
It is intended to.
Appended drawing reference：
The quick slurry stop 100 of double-shielded TBM,
Flexible pipe 1, backfilling material 2, lining segment 3, fill pipe 4, material filling machine 5, connector 6, section of jurisdiction groove 7, note
Starch hole 8, grout stop 9, section of jurisdiction and country rock cavity 10, section of jurisdiction backfilling material 11.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Below with reference to Fig. 1-Fig. 3 description according to the quick slurry stop 100 of double-shielded TBM of the utility model embodiment.
It as shown in Figure 1-Figure 3, include lining cutting according to the quick slurry stop 100 of the double-shielded TBM of the utility model embodiment
Section of jurisdiction 3 and grout stop 9, lining segment 3 form loop tunnel pipe for trimmed tunnel country rock, and 9 grout stop of grout stop is around tunnel
The outer wall of deferent is arranged, and grout stop 9 is made of the flexible pipe 1 of end seals, the segment dislocation filled cavity of flexible pipe 1, backfills material
Material 2, which is filled with 1 filled cavity of flexible pipe, expands flexible pipe 1, and the outer peripheral surface of the grout stop 9 after expansion squeezes tunnel surrounding inner wall,
In, flexible pipe 1 has the connector 6 for being filled with backfilling material 2.
It is understood that grout stop 9 is set to lining segment 3 in advance, when lining segment 3 is completed simultaneously lining cutting in tunnel
When country rock, backfilling material 2 is filled into the filled cavity of grout stop 9, grout stop 9 is expanded, the grout stop 9 after expansion squeezes
It is pressed on tunnel surrounding inner wall, when preventing lining segment and country rock cavity 10 from filling, the flow direction driving of section of jurisdiction backfilling material 11 end adds
Fast project progress, reduces the initial deformation of tunnel surrounding.
According to the quick slurry stop of the double-shielded TBM of the utility model embodiment, since grout stop is set to lining tube in advance
Piece, when lining segment is completed simultaneously lining cutting when tunnel surrounding, into the filled cavity of grout stop, filling backfilling material to stop
Slurry ring expands, and the grout stop after expansion is extruded in tunnel surrounding inner wall, to prevent lining segment from filling out with tunnel surrounding cavity
When filling section of jurisdiction backfilling material, section of jurisdiction backfilling material flow direction driving end accelerates project progress, the initial stage for reducing tunnel surrounding becomes
Shape.
In some embodiments, lining segment 3 is equipped with the injected hole 8 extended radially through, and connector 6 is stretched out from injected hole 8.
Construction personnel can carry out the padding of grout stop 9 in tunneltron as a result, and such padding is very convenient
In some embodiments, the outer wall of lining segment 3 is equipped with the section of jurisdiction groove 7 of annular, and grout stop 9 is adhered to section of jurisdiction
Groove 7.As a result, in the formation for facilitating grout stop 9, while also there is certain position-limiting action to grout stop 9, it is therefore prevented that grout stop 9
Tunnel it is mobile.
In some embodiments, the bottom surface of section of jurisdiction groove 7 is cambered surface.Grout stop 9 and section of jurisdiction groove 7 are increased as a result,
Fitness further improves the seal degree of grout stop 9.Certainly, section of jurisdiction groove 7 is also formed as other and 9 foreign steamer of grout stop
Wide same shape.
In some embodiments, the radial dimension of the grout stop 9 after expansion is slightly larger than between tunneltron and tunnel surrounding
Gap.There is extruding force, to further improve the close of grout stop 9 between grout stop 9 and tunnel surrounding after expanding as a result,
Feng Xing.
In some embodiments, grout stop 9 includes a plurality of flexible pipe 1, and the segment dislocation of every flexible pipe 1 is son filling
Chamber, multiple sub- filled cavities are not connected to mutually, and a plurality of flexible pipe 1 is overlapped along tunnel outer wall circumferential direction to form grout stop 9.Every flexible pipe
The connector 6 for filling backfilling material 2 is equipped on 1.
It is understood that needing when installing lining segment 3 will be more due to being mostly arc in lining segment 3
Sheet built section of jurisdiction 3 is circumferentially assembled, if grout stop 9 is one integral ring-shaped, will lead to the installation of grout stop 9 more not
Just.Grout stop 9 is circumferentially overlapped by a plurality of flexible pipe 1 and is formed, and can be in advance bonded flexible pipe 1 before installing lining segment 3
In the section of jurisdiction groove 7 of lining segment 3.As a result, after lining segment 3 is installed, a plurality of flexible pipe 1 while the collarette outside section of jurisdiction
It is finished to pre- overlap joint.To sum up, grout stop 9 is circumferentially overlapped by more flexible pipes 1 and is formed, and greatly facilitates the peace of grout stop
Dress, improves construction effect.
In some embodiments, every 1 both ends of flexible pipe are that end is sealed by way of sealing or sewing.It can be with
Understand, is formed since grout stop 9 is circumferentially overlapped by more flexible pipes 1, the circumferential both ends of every flexible pipe 1 are necessary
Guarantee good sealing to prevent backfilling material 2 from revealing.Therefore, 1 both ends of flexible pipe are the sealing by sealing or sewing
The phenomenon that end can guarantee sub- filled cavity leakproofness, prevent backfilling material 2 from revealing.
Specifically, every 1 both ends of flexible pipe are the sealing end by sealing or sewing.More specifically, being filled out to son
After filling intracavitary filling backfilling material 2, the sealing end of the expansion of flexible pipe 1 and two adjacent flexible pipes 1 squeezes overlap joint.As a result,
After the filling of all flexible pipes 1, whole flexible pipes 1 can be formed as the grout stop 9 of a completion, and circumferential adjacent
Two flexible pipes 1 end between there is no gap, avoid when filling section of jurisdiction backfilling material 11 in section of jurisdiction and country rock cavity 10,
The leakage of section of jurisdiction backfilling material 11.
In some embodiments, flexible pipe 1 is arranged in a one-to-one correspondence with lining segment 3, and the circumferential length of every flexible pipe 1 is big
In the circumferential length of corresponding lining segment.Thus, it is possible to further facilitate the installation of flexible pipe 1.Certainly, the utility model its
In his embodiment, a flexible pipe 1 can also correspond to multiple lining segments 3 and be arranged, or in the embodiment having, a plurality of flexibility
The corresponding lining segment 3 of pipe 1 is arranged.
In some embodiments, backfilling material 2 is any one of empty gas and water, cement mortar and cement paste.By
This, can be applicable in different engineering geological conditions.
In some embodiments, backfilling material 2 is any one of empty gas and water, cement mortar and cement paste.Specifically
Ground, when backfilling material 2 is air, after the filling of section of jurisdiction backfilling material 11 is completed in one section of section of jurisdiction and country rock cavity 10, air
Discharge, flexible pipe 1 are tightly adsorbed in section of jurisdiction groove 7 again, and the section of jurisdiction backfilling material 11 of next grouting circulation backfills flexibility again
The section of jurisdiction of 1 position of pipe and country rock cavity 10 simultaneously connect into integer support structure with the section of jurisdiction backfill material 11 of upper one grouting circulation,
When backfilling material 2 is cement mortar or cement paste, cement slurry forms cured 9 structure of grout stop by hydration reaction, lining
It builds section of jurisdiction 3 and is connect with enclosing-rock cement-grouting circulation supporting construction by grout stop 9.
The quick slurry stop of double-shielded TBM of one specific embodiment of the utility model is described below with reference to Fig. 1-Fig. 3
100。
A kind of quick slurry stop 100 of double-shielded TBM includes grout stop 9 and lining segment 3 as shown in Figure 1-Figure 3.Only starch
Ring 9 is formed by a plurality of flexible pipe 1 along the circumferential overlap joint in 3 periphery of lining segment, and 3 outer surface of lining segment is equipped with section of jurisdiction groove 7, flexible
Pipe 1 is bonded in advance inside section of jurisdiction groove 7, and 1 top connection 6 of flexible pipe is stretched out from injected hole 8, and material filling machine 5 passes through filling pipe
Backfilling material 2 is filled in inside flexible pipe 1 by road 4 and connector 6, and after 1 volume expansion of flexible pipe, the end at circumferential both ends is mutually tight
Close overlap joint forms grout stop 9.The length of flexible pipe 1 is slightly larger than the outer surface annular length of corresponding section of jurisdiction, to guarantee 1 end of flexible pipe
The mutually close overlap joint of head, the diameter of flexible pipe 1 is slightly larger than section of jurisdiction and country rock cavity clearance, to guarantee that flexible pipe 1 is being filled back
Tunnel wall can be closely compressed after filling chock material 2.
Specific step is as follows：First flexible pipe 1 is adhered in corresponding 3 outer surface groove of lining segment outside Tunnel,
The section of jurisdiction transportation system carried using double-shielded TBM and duct piece installation machine assemble lining segment 3 and by lining segment in tail shield
3 lining cutting will backfill material after material filling machine 5 is connected to the connector 6 of flexible pipe 1 using fill pipe 4 in tunnel surrounding inner wall
Material 2 is filled in inside flexible pipe 1 by sequence from bottom to up, and backfilling material 2 makes 1 end of flexible pipe after making 1 volume expansion of flexible pipe
The mutual close overlap joint of head forms grout stop 9, when being filled in section of jurisdiction and the filling section of jurisdiction backfilling material 11 of country rock cavity 10 with limitation, pipe
The flow direction driving of piece backfilling material 11 end.
The quick slurry stop 100 of the double-shielded TBM of the present embodiment, lining segment 3 and the mutual close fit of grout stop 9, it is real
After existing double-shielded TBM driving, the timely segmented seal of section of jurisdiction and country rock cavity 10 reaches quickly into section of jurisdiction and country rock cavity 10
Portion Fast Filling section of jurisdiction backfilling material 11 forms country rock direct organization, realizes the purpose of the timely quick supporting of tunnel surrounding.It is flexible
Pipe 1 is bonded in section of jurisdiction outer surface groove in advance, that is, the installation difficulty for reducing lining segment 3 is conducive to assembling and the lining of section of jurisdiction again
It builds.Diameter after the expansion of flexible pipe 1 is slightly larger than the gap of country rock and section of jurisdiction, and then it is ellipse that the flexible pipe 1 of volume expansion can be made to be formed
Circle increases the contact area of Tunnel wall Yu flexible pipe 1, improves the leakproofness of section of jurisdiction and country rock cavity 10；Grout stop 9 by
A plurality of flexible pipe 1 is mutually closely formed by overlapping in end, that is, can guarantee that the effect only starched can simplify plasm stopping technique again, accelerates only to starch
Ring 9 forms speed, can fill a variety of backfilling materials 2 such as empty gas and water, cement paste or cement mortar in flexible pipe 1, therefore can
To be applicable in different geological conditions.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (10)
1. a kind of quick slurry stop of double-shielded TBM, which is characterized in that including：
Lining segment, the lining segment is for trimmed tunnel country rock to form loop tunnel pipe；
Grout stop, the grout stop are arranged around the outer wall of the tunneltron, flexible pipe of the grout stop by end seals, institute
The segment dislocation filled cavity of flexible pipe is stated, backfilling material, which is filled with the flexible pipe filled cavity, makes the flexible tube swelling, after expansion
The outer peripheral surface of the grout stop squeeze the inner wall of the tunnel surrounding, wherein the flexible pipe has for being filled with described return
The connector of filling chock material.
2. the quick slurry stop of double-shielded TBM according to claim 1, which is characterized in that the lining segment is equipped with
The injected hole extended radially through, the connector are stretched out from the injected hole.
3. the quick slurry stop of double-shielded TBM according to claim 1, which is characterized in that the outer wall of the lining segment
It is equipped with the section of jurisdiction groove of annular, the grout stop is adhered to the section of jurisdiction groove.
4. the quick slurry stop of double-shielded TBM according to claim 3, which is characterized in that the bottom surface of the section of jurisdiction groove
For cambered surface.
5. the quick slurry stop of double-shielded TBM according to claim 1, which is characterized in that the grout stop after expansion
Radial dimension is slightly larger than the gap between the tunneltron and the tunnel surrounding.
6. the quick slurry stop of double-shielded TBM according to claim 1, which is characterized in that the grout stop includes a plurality of
The segment dislocation of the flexible pipe, every flexible pipe is sub- filled cavity, and multiple sub- filled cavities are not connected to mutually, a plurality of institute
Flexible pipe is stated to overlap along tunnel outer wall circumferential direction to form the grout stop.
7. the quick slurry stop of double-shielded TBM according to claim 6, which is characterized in that every flexible pipe both ends
It is that end is sealed by way of sealing or sewing.
8. the quick slurry stop of double-shielded TBM according to claim 7, which is characterized in that filled out into the sub- filled cavity
After filling the backfilling material, the sealing end of the flexibility tube swelling and two adjacent flexible pipes is in the lining cutting
Overlap joint is squeezed at the circumferential direction connector of section of jurisdiction.
9. the quick slurry stop of double-shielded TBM according to claim 6, which is characterized in that the flexible pipe and the lining
It builds section of jurisdiction to be arranged in a one-to-one correspondence, the circumferential lengths of every flexible pipe are greater than the circumferential lengths of the corresponding lining segment.
10. the quick slurry stop of double-shielded TBM according to claim 1, which is characterized in that the backfilling material is sky
Any one of gas and water, cement mortar and cement paste.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820357447.8U CN208137953U (en) | 2018-03-15 | 2018-03-15 | A kind of quick slurry stop of double-shielded TBM |
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| CN201820357447.8U CN208137953U (en) | 2018-03-15 | 2018-03-15 | A kind of quick slurry stop of double-shielded TBM |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441470A (en) * | 2018-12-25 | 2019-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM tunnels tunnel surrounding rebound value test method |
| CN109707398A (en) * | 2019-01-08 | 2019-05-03 | 西南交通大学 | A kind of resistance to jelly type pin-connected panel Tunnel structure and construction method |
| CN113006823A (en) * | 2021-03-10 | 2021-06-22 | 浙江省隧道工程集团有限公司 | Double-shield TBM (Tunnel boring machine) fractured rock section quick supporting system and construction method thereof |
| CN113863953A (en) * | 2021-10-08 | 2021-12-31 | 陕西同人应用材料有限公司 | Subway tunnel segment reinforcing structure and rapid construction process |
-
2018
- 2018-03-15 CN CN201820357447.8U patent/CN208137953U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441470A (en) * | 2018-12-25 | 2019-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM tunnels tunnel surrounding rebound value test method |
| CN109707398A (en) * | 2019-01-08 | 2019-05-03 | 西南交通大学 | A kind of resistance to jelly type pin-connected panel Tunnel structure and construction method |
| CN113006823A (en) * | 2021-03-10 | 2021-06-22 | 浙江省隧道工程集团有限公司 | Double-shield TBM (Tunnel boring machine) fractured rock section quick supporting system and construction method thereof |
| CN113006823B (en) * | 2021-03-10 | 2023-07-07 | 浙江省隧道工程集团有限公司 | Rapid supporting system for double-shield TBM fractured rock section and construction method thereof |
| CN113863953A (en) * | 2021-10-08 | 2021-12-31 | 陕西同人应用材料有限公司 | Subway tunnel segment reinforcing structure and rapid construction process |
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